NicePower AN-1000A Passive noise cancelling General Aviation Headset (green)

MIND: this lheadset is presented and delivered in plastic bag! Not in a box.
PNR Aviation Headset

GA Use Dual Plugs
Super Soft Double Foam Head Pad
New Comfort foam, undercut ear seals
Molded cord assembly made to exceptional pull and flex standards
Noise-canceling electret
Precision flex boom for perfect microphone placement
Straight cord from headset to molded plug, 150CM

Color: Green

Noise Reduction Ratings (NRR):24dB

Specifications

sSType: Dynamic (F50)
Frequency Response:100Hz to 8 kHz
Sensitivity:95+/-5 dB SPL

(1 kHz, 1 mW input per earcup side)
full volume on ear simulator
Impedance:150 ohms (300 ohms each; wired in parallel)
Rate Input:100mW
Max. Input: 250mW
Microphone and Amplifier:
Element Type: Noise-canceling electret
Frequency Response:150Hz to 5 kHz
Operating Voltage (supplied by aircraft ):8-32 Volts DC

Matching Impedance: 150-1000 ohms
Sensitivity:-33+/-4 dB
(ref: 0dB SPL=20.0uPa at 1 kHz with 10 Vdc 150 ohms AC load)

General

Operating Temperature: -20 to 70°C
Cordage: Straight cord from headset to molded plug, 150CM
Intercom Connections Plug:

Earphone Plug: PJ-055( .25"F6.3 phone plug)
Microphone Plug:PJ-068( .206"F5.2 phone plug)
Weights: 520g
Noise Reduction Specifications:
Attenuation Frequency Band__________20Hz~20KHz
Main Attenuation Frequency Band__________20Hz~600Hz
Attenuation Capability__________18~21dB
Power Consumption__________30 mW
Headset size range Height: 10 to 14 cm